@article {JaklJMO03, title = {Behaviour of an optically trapped probe approaching a dielectric interface}, journal = {J Mod. Optics}, volume = {50}, year = {2003}, pages = {1615-1625}, keywords = {MF}, doi = {10.1080/09500340308235235}, author = {P J{\'a}kl and M. {\v S}er{\'y} and J Je{\v z}ek and A. Jon{\'a}{\v s} and M. Li{\v s}ka and P. Zem{\'a}nek} }